Mobile Engineer

About the role

The role is within the Dynamic team at Fireblocks, a company that provides the simplest and most secure way for companies to work with digital assets. Dynamic is Fireblocks' embedded wallet platform, designed for developers who want to bring crypto and stablecoin experiences into modern applications.

What You’ll Do

• Design and implement high-quality native mobile SDKs that enable developers to integrate embedded wallet functionality into their applications, focusing on API ergonomics, performance, and reliability.
• Own SDK features end-to-end: from API design and architecture, through implementation and testing, to release, versioning, and developer documentation.
• Build and maintain secure, reliable SDK components for wallet operations, including cryptographic operations, blockchain interactions, and security-sensitive flows.
• Define and evolve the SDK architecture to support long-term maintainability, backward compatibility, and adoption across diverse customer applications.
• Create clear, comprehensive SDK documentation and integration guides.
• Work with developer relations and support teams to address customer integration challenges.
• Raise the bar for quality and operational excellence by establishing best practices around testing, observability, releases, and code health.
• Contribute to a culture of ownership and execution, leading by example through hands-on work, code reviews, documentation, and knowledge sharing.

What You’ll Bring

• 5+ years of software engineering experience, with deep focus on mobile development and shipping production-grade SDKs.
• Strong hands-on experience with iOS (Swift) and/or Android (Kotlin); experience with React Native or other cross-platform frameworks, and familiarity with all.
• Experience building mobile SDKs or shared libraries, including API design, versioning, packaging, and long-term maintenance across platforms.
• Experience with blockchain-enabled mobile systems, including wallet flows, signing, and on-chain interactions.
• Experience working on security-sensitive mobile software, such as key management, secure storage, cryptography, or financial products.
• A strong grasp of mobile engineering best practices, including CI/CD, automated testing, release management, and observability.
• A get-things-done mindset with the ability to independently own problems and deliver end-to-end solutions.
• Comfortable making long-term architectural decisions while remaining pragmatic and adaptable.
• A Bachelor's degree in Computer Science / Engineering or equivalent practical experience.

Requirements

Remote role in a distributed team; preference for candidates in the Americas time zone.

Big Advantages

• Rust and/or WebAssembly (Wasm) experience, particularly building cross-platform SDKs consumed by mobile apps.
• Experience designing shared core logic used across iOS and Android.
• Experience with advanced mobile security primitives (secure hardware, MPC, low-level crypto).
• Prior experience owning or founding a mobile platform or SDK from scratch.

Pay

A reasonable base salary range estimate for this position is $177,000 to $230,000. The base salary is one component of the total compensation package, which for some roles may include a target bonus, a very competitive equity grant, and very generous benefits.